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Simplifying 6ab + -8a + 21b + -28 = 0 Reorder the terms: -28 + -8a + 6ab + 21b = 0 Solving -28 + -8a + 6ab + 21b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '28' to each side of the equation. -28 + -8a + 6ab + 28 + 21b = 0 + 28 Reorder the terms: -28 + 28 + -8a + 6ab + 21b = 0 + 28 Combine like terms: -28 + 28 = 0 0 + -8a + 6ab + 21b = 0 + 28 -8a + 6ab + 21b = 0 + 28 Combine like terms: 0 + 28 = 28 -8a + 6ab + 21b = 28 Add '-21b' to each side of the equation. -8a + 6ab + 21b + -21b = 28 + -21b Combine like terms: 21b + -21b = 0 -8a + 6ab + 0 = 28 + -21b -8a + 6ab = 28 + -21b Reorder the terms: -28 + -8a + 6ab + 21b = 28 + -21b + -28 + 21b Reorder the terms: -28 + -8a + 6ab + 21b = 28 + -28 + -21b + 21b Combine like terms: 28 + -28 = 0 -28 + -8a + 6ab + 21b = 0 + -21b + 21b -28 + -8a + 6ab + 21b = -21b + 21b Combine like terms: -21b + 21b = 0 -28 + -8a + 6ab + 21b = 0 The solution to this equation could not be determined.
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